Ayat 47. And thus Allah have sent down the Book (i.e. this Quran) to you (O Muhammad SAWW (PBUH), and those whom Allah gave the Scripture [the Taurat (Torah) and the Injeel (Gospel) aforetime] believe therein as also do some of these (who are present with you now like Hazrat Abdullah bin Salam (May Allah be pleased with him) and none but the disbelievers reject Our Ayat [(proofs, signs, verses, lessons, etc., and deny Our Oneness of Lordship and Our Oneness of worship and Our Oneness of Our Names and Qualities: i.e. Islamic Monotheism)].

Tafseer of Surah Al-Ankabut (The Spider) Ayat 47. And thus (it is) that Allah have sent down the Book to thee. So the People of the Book believe therein, as also do some of these (pagan Arabs): and none but Unbelievers reject our signs. It is in this spirit that all true Revelation comes from Allah. Allah is One, and His Message cannot come in one place or at one time to contradict His Message in another place or at another time in spirit, though there may be local variations according to the needs or understanding of men at any given time or place – The sincere Jews and Christians found in the Holy Prophet a fulfillment of their own religion. For the names of some Jews who recognized and embraced Islam. Among the Christians, too, the Faith slowly won ground. Embassies were sent by the Holy Prophet in the 6th and 7th years of the Hijrah to all the principal countries around Arabia, viz., the capital of the Byzantine Empire (Constantinople), the capital of the Persian Empire (Mada’in), the Sasanian capital known to the West by the Greek name of Ctesiphon, (about thirty miles south of modem Baghdad), Syria, Abyssinia, and Egypt. All these (except Persia) were Christian countries. In the same connection, an embassy was also sent to Yamamah in Arabia itself (east of the Hijaz) where the Banu Hanifah tribe was Christian, like the Harith tribe of Najran who voluntarily sent an embassy to Madman. All these countries except Abyssinia eventually became Muslim, and Abyssinia itself has a considerable Muslim population now and sent some Muslim converts to Madinah in the time of the Prophet himself. As a generalization, it is true that the Jewish and the Christian peoples as they existed in the seventh century of the Christian era have been mainly absorbed by Islam, as well as the lands in which they predominated. Remnants of them built up new nuclei. The Roman Catholic Church conquered new lands among the northern (Germanic) Pagans and the Byzantine Church among the eastern (Slavonic) Pagans, and the Protestantism of the 16th century gave a fresh stimulus to the main ideas for which Islam stands, viz., the abolition of priest craft, the right of private judgment, the simplification of ritual, and the insistence upon the simple, practical, everyday duties of life. The Pagan Arabs also gradually came in until they were all absorbed in Islam.